获取 Windows 操作系统的官方支持和帮助信息，以及如何使用 Windows 的指南。

Use the XLOOKUP function to find things in a table or range by row. For example, look up the price of an automotive part by the part number, or find an employee name based on their employee ID. With XLOOKUP, you can look in one column for a search term and return a result from the same row in another column, regardless of which side the return column is on.

Xbox Support offers help for Xbox, Game Pass, and billing questions. Get advice and customer service in the Xbox Support community.

A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

Follow the procedure in the Set up access to your company resources article to enroll your iOS phone or tablet. Important: Once you begin the enrollment process, you should complete the process in its entirety since pausing for more than a few minutes usually stops your progress and requires you to start over.If this process should fail, you need to return to the Company Portal app to try again.

Setting up the modem and Internet connection. After you have all the equipment, you'll need to set up your modem and Internet connection. If your modem wasn't set up for you by your Internet service provider (ISP), follow the instructions that came with your modem to connect it to your PC and the Internet.

Learn how to run a disk cleanup in Windows including deleting temporary and system files to free up disk space.

Microsoft added OAuth support for Yahoo! accounts in the Windows 10 Creators update. To install the Creators Update now, go to the software download site, and select Update now.For more information about Windows updates, see Get the latest Windows update.. If you have a Japanese Yahoo! email account, you'll need to do the following:

When in the new Teams, turn on (or off) notifications by selecting Settings and more at the top of the new Teams, then selecting Settings > Notifications > Open Windows notifications settings.Find Microsoft Teams (work preview) in the apps list and set your preference.

注意: 如果使用 Microsoft 帐户 （例如 Outlook.com 、Hotmail、Live 或 MSN 电子邮件帐户）而不是工作或学校帐户登录，请注销，然后使用正确的帐户重新登录。 不确定使用哪个帐户登录？ 在 Outlook 导航标头中选择 “帐户管理员 ”。 如果未使用所需帐户登录，请选择“ 注销 ”并重新开始该过程，或选择 ...